/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.geode.modules.session.catalina.internal;

import org.apache.geode.DataSerializable;
import org.apache.geode.DataSerializer;
import org.apache.geode.Instantiator;
import org.apache.geode.modules.session.catalina.DeltaSession;
import org.apache.geode.modules.session.catalina.DeltaSessionInterface;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

@SuppressWarnings("serial")
public class DeltaSessionUpdateAttributeEvent implements DeltaSessionAttributeEvent {

  private String attributeName;

  private Object attributeValue;

  public DeltaSessionUpdateAttributeEvent() {
  }

  public DeltaSessionUpdateAttributeEvent(String attributeName, Object attributeValue) {
    this.attributeName = attributeName;
    this.attributeValue = attributeValue;
  }

  public String getAttributeName() {
    return this.attributeName;
  }

  public Object getAttributeValue() {
    return this.attributeValue;
  }

  public void apply(DeltaSessionInterface session) {
    session.localUpdateAttribute(this.attributeName, this.attributeValue);
  }

  public void fromData(DataInput in) throws IOException, ClassNotFoundException {
    this.attributeName = DataSerializer.readString(in);
    this.attributeValue = DataSerializer.readObject(in);
  }

  public void toData(DataOutput out) throws IOException {
    DataSerializer.writeString(this.attributeName, out);
    DataSerializer.writeObject(this.attributeValue, out);
  }

  public static void registerInstantiator(int id) {
    Instantiator.register(new Instantiator(DeltaSessionUpdateAttributeEvent.class, id) {
      public DataSerializable newInstance() {
        return new DeltaSessionUpdateAttributeEvent();
      }
    });
  }

  public String toString() {
    return new StringBuilder().append("DeltaSessionUpdateAttributeEvent[")
        .append("attributeName=")
        .append(this.attributeName)
        .append("; attributeValue=")
        .append(this.attributeValue)
        .append("]")
        .toString();
  }
}

